Strain evolution of zirconium hydride embedded in a Zircaloy-2 matrix

被引：46
|
作者：
Kerr, M. [1 ]
Daymond, M. R. [1 ]
Holt, R. A. [1 ]
Almer, J. D. [2 ]
机构：
[1] Queens Univ, Dept Mech & Mat Engn, Kingston, ON K7L 3N6, Canada
[2] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA
来源：
JOURNAL OF NUCLEAR MATERIALS | 2008年 / 380卷 / 1-3期
基金：
加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1016/j.jnucmat.2008.07.004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In situ synchrotron X-ray diffraction has been used to determine strain evolution in a minority phase, zirconium hydride, embedded in Zircaloy-2 (<100 wt ppm average hydrogen content). The elastic modulus of the hydride is similar to that of Zircaloy-2. Three regimes are observed: I - elastic, II - post-yield load transfer from Zircaloy-2 to hydride, and III - strain saturation, possibly due to hydride fracture. The interpretation is supported by finite element calculations and scanning electron microscopy of the fracture surface. (C) 2008 Elsevier B.V. All rights reserved.
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页码：70 / 75
页数：6
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